This is a surprisingly charming and fun game, as long as you don't take it too seriously. It's a pretty standard Japanese-styled turn-based RPG with a visual novel style of narration. I'll admit I haven't finished it yet but I'm liking what I'm playing so far.
The plot is very simple and quite silly: aliens that look like plants from another dimension are invading Earth and it's up to the girls from the school's science club to stop them. The writing is mostly decent, each of the girls has a somewhat superficial but recognizable characterization, and it's all potentially funny, aside from those few moments where it's trying to be... educational? It just comes off as kind of out of place, but sometimes it's played off as a joke so that's fine.
As for the gameplay and mechanics, it's pretty standard: classic turn-based combat with sort of an emphasis on formation and SP management (basic attacks are mostly useless; you get to place the girls on a front line and a back line, the latter can't be attacked except by AoE moves, but only the girls on the front line get to act), which is made easier by the fact that walking in the overworld seems to gradually restore SP (and it's honestly a saving grace, since recovery items are pretty hard to come by). Each girl has their own role, sort of, and they all manage to be very useful, so it's mostly balanced on that front (though I find myself using Heather and Andrea the most due to their low-cost and decent damage AoE skills, which become basically a requirement at a certain point). Then you also have the standard gaining EXP and leveling up deal, and with each level up you get to decide what skill or stat to upgrade, which makes for a fair bit of customization. Upgrading a skill will give you a higher level version of the same skill, with higher damage and/or stronger effects, but it will raise the skill's SP cost; luckily you still get to choose to use the level 1 version of any upgraded skill, so it's not a big deal. After a certain level, you will obtain powerful high-damage skills called "finishers", that will increase the amount of EXP earned by a character if she kills an enemy with a finisher, pretty handy for helping with grinding but some finishers are way better than others, which makes using the others effectively to level up everyone a bit of a hassle. Battles are mostly pretty easy even on normal difficulty, at least for me; the ability to save at any point helps a lot too. Outside of battle, moving in the overworld is pretty straightforward, as it's the usual overhead view where you can just move the character around by either clicking on your destination with the mouse or just using the arrow keys, and this is where I think I have my only real complaint: if you move with the arrow keys (which I find to be much preferable compared to the mouse) and hold one direction, instead of just walking normally in that direction for as long as that button is pressed, you'll basically speed up uncontrollably, which basically forces you to tap the direction rather than holding it, and it's kind of annoying honestly. Also the sideview sprite for the protagonist in the overworld looks pretty ugly.
Speaking of which, let's talk graphics and sound. This game only uses 2d sprites for the gameplay and hand-drawn anime-style graphics for the visual novel segments and backgrounds. The sprites look pretty cute, at least for the girls; the aliens' sprites have a fair bit less care put into them, but they don't necessarily look bad most of the time. The graphics for the overworld tilesets and stuff look pretty rough and give off a sort of amateurish vibe, which isn't a great thing but I believe just adds more to the game's doujin kinda charm. The hand-drawn portraits for the characters and backgrounds are nothing special style-wise, but they're cute and well made so nothing to complain about here.
The game's music is pretty decent, you get a handful of random battle themes for every basic encounter which I'd say helps a lot with not making it feel to repetitive, although the quality greatly varies from track to track. I'd still love to find a way to listen to the game's OST separately cause I find myself liking a couple of them a lot. Music for the overworld is also mostly pretty decent, atmospheric enough in a way. There's a little bit of Japanese voice acting during battles and when healing characters from the menu, which is cute and all, even though it gets kind of annoying after a while, especially because all of the characters have to say "nya" everytime and it honestly kinda drives me insane. Unfortunately the voice acting can't be completely disabled (can only disable the voices for when you're attacking, for some reason) and the mixing leaves a lot to be desired, with loud sound effects often blowing my ears out and muffling some of the other audio stuff (like the voices for example, since the slider for the sound effects also includes those you can't really do much about it if you care). That aside, sound's decent I guess.
So overall I'd say this is a pretty nice game, it feels incredibly indie in its own way but it's part of the charm. So if you want a decent JRPG with some tactical gameplay that doesn't take itself too seriously and embraces the anime silliness, I can recommend this one.
Also I'm convinced Nicole is gay for Heather, and that's epic.
